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Fertilization of the desert soil by rock-eating snails

Abstract

PLANT productivity in deserts can be nitrogen-limited. Nitrogen inputs are often low, soil nitrogen pools small, and losses from runoff, erosion, volatilization and denitrification, can be high1–6. We have now found an unusual, important source of soil nitrogen in the Central Negev Highlands of Israel, a limestone rock desert with patches of soil (Fig. 1). Snails feed on endolithic lichens that grow within the rock, ingesting both rock and lichens7,8, and depositing their faeces on the soil under the rocks. Snails transfer between 22–27 mg nitrogen per m2 per year to soil, which constitutes about 11% of total soil nitrogen inputs, at least 18% of net soil inputs, and a minimum of 27% of the nitrogen annually accumulated by endolithic lichens from dust. The substantial contribution of snails to the nitrogen cycle is probably important for higher plant production.

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References

  1. 1

    Skujins, J. Ecol. Bull. 33, 477–491 (1981).

    Google Scholar 

  2. 2

    West, N. & Skujins, J. (eds) Nitrogen in Desert Ecosystems (Dowden, Stroudsburg, Pennsylvania, 1978).

  3. 3

    Boring, L. R., Swank, W. T., Waide, J. B. & Henderson, G. S. Biogeochemistry 6, 119–159 (1988).

    CAS  Article  Google Scholar 

  4. 4

    West, N.E. in Semi Arid Lands and Deserts: Soil Resource and Rehabilitation, (ed. Skujins, J.) (Dekker, New York, in the press).

  5. 5

    Esser, U. thesis, Wilhems-Universität, Munster (1989).

  6. 6

    Esser, U., Schreiber, K. F., Shachak, M. & Yair, A. Trans. 13th Congr. Int. Soc. Soil Science 3, 730–731 (1986).

    Google Scholar 

  7. 7

    Shachak, M., Jones, C. G. & Granot, Y. Science 236, 1098–1099 (1987).

    ADS  CAS  Article  Google Scholar 

  8. 8

    Granot, Y. Israel J. Zool. 34, 205–211 (1987).

    Google Scholar 

  9. 9

    Offer, Z. & Goossens, D. J. Arid Envir. 17, 1–19 (1990).

    Article  Google Scholar 

  10. 10

    Evanari, M., Shanan, L. & Tadmore, N. The Negev 2nd edn (Harvard University Press, Cambridge, 1982).

    Book  Google Scholar 

  11. 11

    Hillel, D. Negev. Land. Water and Life in a Desert Environment (Praeger, New York, 1982).

    Google Scholar 

  12. 12

    Chew, R. M. Ohio J. Sci. 74, 359–370 (1974).

    Google Scholar 

  13. 13

    Mattson, W. J. & Addy, N. D. Science 190, 515–522 (1975).

    ADS  Article  Google Scholar 

  14. 14

    Kitchell, J. F. et al. Bioscience 29, 28–34 (1979).

    Article  Google Scholar 

  15. 15

    Owen, D. F. Oikos 35, 230–235 (1980).

    Article  Google Scholar 

  16. 16

    Petelle, M. Oikos 35, 127–128 (1980).

    Article  Google Scholar 

  17. 17

    Choudry, D. Oikos 43, 401–402 (1984).

    Article  Google Scholar 

  18. 18

    Choudry, D. Oikos 45, 287–290 (1985).

    Article  Google Scholar 

  19. 19

    Lafage, J. P. & Nutting, W. L. in Production Ecology of Ants and Termites (ed. Brian, M. V.) 165–232 (Cambridge University Press, 1977).

    Google Scholar 

  20. 20

    Crawford, C. S. J. Arid Envir. 2, 31–42 (1979).

    ADS  Article  Google Scholar 

  21. 21

    Schaefer, D. A. & Whitford, W. G. Oecologia 48, 277–283 (1981).

    ADS  Article  Google Scholar 

  22. 22

    Danin, A. & Garty, J. Z. Geomorphol. 27, 423–444 (1983).

    Google Scholar 

  23. 23

    Kushnir, E. thesis, Univ. Tel Aviv (1979).

  24. 24

    Kidron, G. thesis, Hebrew Univ. of Jerusalem (1988).

  25. 25

    Deutsche Einheits zur Wasseruntersuchung Vol. 1 (Verlag Chemie, Weinheim, 1974).

  26. 26

    Hardy, R. W. F., Burns, R. C. & Holsten, R. D. Soil Biol. Biochem. 5, 47–81 (1973).

    CAS  Article  Google Scholar 

  27. 27

    Friedmann, E. I. & Kibler, A. P. Microb. Ecol. 6, 95–108 (1980).

    CAS  Article  Google Scholar 

  28. 28

    Weaver, R. W. in Field Measurement of Dinitrogen Fixation and Denitrification, (eds Hauck, R. D. & Weaver, R. W.) 1–9 (Soil Sci. Soc. Amer. Spec. 18, Madison, 1986).

    Google Scholar 

  29. 29

    Paul, E. A. & Clark, F. E. Soil Microbiology and Biochemistry (Academic, San Diego, 1989).

    Book  Google Scholar 

Download references

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Jones, C., Shachak, M. Fertilization of the desert soil by rock-eating snails. Nature 346, 839–841 (1990). https://doi.org/10.1038/346839a0

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